Some tests segfault

[erooke]

For some reason the following tests segfault

ocp.nix/pkgs/python/cadquery/default.nix

Lines 55 to 62 in 375d82d

	disabledTests = [
	# TODO: why do these segfault?
	"test_colors_assy0"
	"test_colors_assy1"
	"test_colors_fused_assy"
	"testExtrude"
	"testDXF"
	];

I do not know why yet.

[erooke]

It appears that build123d also has a segfaulting test. I suspect I'm doing something wrong when I build ocp.

ocp.nix/pkgs/python/build123d/default.nix

Lines 66 to 67 in da0b6a3

	# TODO: why does this segfault
	"test_ellipse_rotation"

[erooke]

cq-warehouse has segfaulting tests as well:

ocp.nix/pkgs/python/cq-warehouse/default.nix

Lines 35 to 41 in 6a916e2

	disabledTests = [
	"test_five_sprocket_chain"
	"test_missing_link"
	"test_oblique_plane"
	"test_assemble_chain_transmission"
	"test_make_link"
	];

I am assuming that these all share a root cause, or similar cause anyway.

All of the tests which construct a Chain object segfault while the rest don't.

[erooke]

Both the build123d and cq-warehouse tests trigger the segfault by trying to extrude with "both". Interestingly not every call to extrude with "both" seems to trigger this segfault. build123d in particular has other tests with this function call which do not segfault.

[erooke]

This looks like a known issue: CadQuery/OCP#149

[erooke]

Things which have not helped:

• switching from gcc to clang15
• this diff for pywrap
• the patches in occt-feedstock
• using the pre-generated ocp source files